Comparison between surgical outcomes of colorectal cancer in younger and elderly patients

Figure 1 Changes in laboratory data of elderly and younger patients with colorectal adenocarcinoma at different times perioperatively: white blood cell count (A), serum C-reactive protein level (B), serum total protein level (C), and serum albumin level (D). Serum total protein (TP) and albumin (ALB) levels in the elderly group were significantly lower than in the younger group at different times perioperatively. The white blood cell (WBC), C-reactive protein (CRP), TP and ALB data are expressed as mean ± SD. Preop: Before surgery (^aP < 0.05). POD: Postoperative day.

Figure 2 Serum carcinoembryonic antigen (A) and carbohydrate antigen 19-9 (B) levels measured by enzyme immunoassay in patients with colorectal adenocarcinoma were compared pre- and postoperatively between the younger and elderly groups. Postoperative carcinoembryonic antigen (CEA) level in the younger group was significantly higher than the preoperative level, and the postoperative level in the elderly group was significantly lower than the preoperative level. However, there were no significant differences for the change in carbohydrate antigen 19-9 (CA19-9) levels pre- and postoperatively in the two groups. CEA and CA19-9 data are expressed as mean. ^aP < 0.05. NS: Not significant.